NEEWER MRC Variable ND2-ND400 Lens Filter Size:40.5mm it can be mounted either

it can be mounted either between the tripod and ball head or the ball head and camera

1/4" to 3/8" Adapter- With a 1/4"-3/8" reversible screw adapter

battery status (low battery: 3 indicators flash at the same time)

HD Optical Glass with Multiple Resistant Nano Coatings- With high-quality HD optical glass and 30 layers of nanocoatings on both sides of the filters

The white diffuser will make the light softer

NEEWER MRC Variable ND2-ND400 Lens Filter Size:40.5mm it can be mounted eitherFeatures Compatibility & Wide Application Designed for all lenses with a 58mm filter size; ideal for taking images and videos on rivers, waterfalls, the sea, fountains, traffic trials, and other moving subjects. Variable ND Filter With variable neutral density from 2 to 400, this ND filter reduces the light that enters the lens in 18. 5 stops, enables you to control exposure in various light conditions, and shoot with slower shutter speeds and wider